.w {
  width: 1200px;
  margin: 0 auto;
}
.container{
  margin: 0 auto;
}
html,body{
  width: 100px;
  height: 100%;
}
body {
  padding: 0;
  margin: 0;
 
}
ol,
ul {
  list-style: none;
}
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
div,
input,
button,
ul,
ol,
p {
  padding: 0;
  margin: 0;
}
a,
a:hover {
  text-decoration: none;
  color: #000;
}
button,
input,
textarea{
  outline: none;
  border: 0;
  background-color: #fff;
}